This part is a kind of semiconductor called B1240.

Function of this product has 2SB1240.

Manufacturers : Rohm

Image and pinout :

Some of the text within the PDF file :

Transistors Medium power Transistor(*32V,*2A) 2SB1188 / 2SB1182 / 2SB1240 / 2SB822 / 2SB1277 / 2SB911M FFeatures 1) Low VCE(sat). VCE(sat) = *0.5V (Typ.) (IC / IB = *2A / *0.2A) 2) Complements the 2SD1766 / 2SD1758 / 2SD1862 / 2SD1189F / 2SD1055 / 2SD1919 / SD1227M. FExternal dimensions (Unit: mm) FStructure Epitaxial planar type PNP silicon transistor (96-131-B24) 215 Transistors FAbsolute maximum ratings (Ta = 25_C) 2SB1188 / 2SB1182 / 2SB1240 / 2SB822 / 2SB1277 / 2SB911M FElectrical characteristics (Ta = 25_C) 216 Transistors FPackaging specifications and hFE hFE values are classified as follows : 2SB1188 / 2SB1182 / 2SB1240 / 2SB822 / 2SB1277 / 2SB911M FElectrical characteristic curves 217 Transistors 2SB1188 / 2SB1182 / 2SB1240 / 2SB822 / 2SB1277 / 2SB911M 218 [ ... ]

B1240 PDF Datasheet Download